package com.quxian.chambercommerce.util;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5Util {

    
    /**
     * md5加密(ITS)
     * @param str
     * @param charSet
     * @return
     */
    public static final String getMD5Str(String str,String charSet) { //md5加密
		MessageDigest messageDigest = null;  
		try {  
			messageDigest = MessageDigest.getInstance("MD5");  
			messageDigest.reset(); 
			if(charSet==null){
				messageDigest.update(str.getBytes());
			}else{
				messageDigest.update(str.getBytes(charSet));  
			}			
		} catch (NoSuchAlgorithmException e) {  
		} catch (UnsupportedEncodingException e) {  
		}  
		
		byte[] byteArray = messageDigest.digest();  
		StringBuffer md5StrBuff = new StringBuffer();  
		for (int i = 0; i < byteArray.length; i++) {              
			if (Integer.toHexString(0xFF & byteArray[i]).length() == 1)  
				md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i]));  
			else  
				md5StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));  
		}  
		return md5StrBuff.toString();  
	}
}
